public bool Connect()
{
var tmp = Handshake.Host.Split(':');
var port = 81;
var host = Handshake.Host;
if (tmp.Length > 1)
{
port = Int32.Parse(tmp[1]);
host = tmp[0];
}
Socket.ReceiveBufferSize = 1024 * 64;
Socket.Connect(host, port);
SendHandshake();
VersionDataFrame = null;
if (!ReadHandshake())
{
Socket.Close();
return false;
}
if (VersionDataFrame == null)
Receive(VersionDataFrame);
return true;
}
public string Receive(DataFrame frame = null)
{
if (frame == null)
frame = new DataFrame();
var buffer = new byte[1024 * 8];
int sizeOfReceivedData = Socket.Receive(buffer);
frame.Append(buffer);
if (frame.IsComplete)
return frame.ToString();
else
return Receive(frame);
}
private bool ReadHandshake()
{
var hs = new byte[1024];
int count = Socket.Receive(hs);
// check that "version" DataFrame has included in this handshake data (DataFrame start with 0 and end with 255)
int start = 0;
int end = count - 1;
int dataFrameLength = 0;
if (hs[end] == 255)
{
// find "version" DataFrame length
for (int i = end; i >= start; --i)
{
if (hs[i] == 0)
{
dataFrameLength = end - i + 1;
break;
}
}
}
// make version DataFrame
if (dataFrameLength != 0)
{
var versionByte = new byte[dataFrameLength];
Array.Copy(hs, count - dataFrameLength, versionByte, 0, dataFrameLength);
VersionDataFrame = new DataFrame();
VersionDataFrame.Append(versionByte);
}
var bytes = new ArraySegment<byte>(hs, 0, count - dataFrameLength);
ServerHandshake handshake = null;
if (bytes.Count > 0)
{
handshake = ParseServerHandshake(bytes);
}
var isValid = (handshake != null) &&
(handshake.Origin == Handshake.Origin) &&
(handshake.Location == "ws://" + Handshake.Host + Handshake.ResourcePath);
// skip checking handshake.AnswerBytes against Handshake.ExpectedAnswer
/*if (isValid)
{
for (int i = 0; i < 16; i++)
{
if (handshake.AnswerBytes[i] != Handshake.ExpectedAnswer[i])
{
isValid = false;
break;
}
}
}*/
return isValid;
}
